为什么id不是File的路径， 如果同时上传多个根据时间 回调不好处理啊

为什么id不是File的路径， 如果同时上传多个根据事件 回调不好处理啊

The issue names no file, test, or entry point. Start by reading the upload-progress API and its callback identifier handling, then clarify whether a File path should identify each concurrent upload. Done requires an agreed identifier and a reproducible multi-upload case.

由索引模型根据 Issue 内容生成。